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# Write a program to extract and print digits of a number in reverse order. The number is input from user.

num = int(input("Enter a number with multiple digit: "))

n=0

while num>0:

a = num%10

num = num - a

num = num/10

print(int(a),end="")

n = n + 1

# Write a function that takes in height(m) and weight(kg), calculates BMI and prints the comments

def bmi(height: "Meters", weight: "Kgs"):

bmi = weight/(height**2)

print("Your BMI is: {0} and you are ".format(bmi), end='')

if ( bmi < 16):

print("severely underweight.")

elif ( bmi >= 16 and bmi < 18.5):

print("underweight.")

elif ( bmi >= 18.5 and bmi < 25):

print("healthy.")

elif ( bmi >= 25 and bmi < 30):

print("overweight.")

elif ( bmi >=30):

print("severely overweight.")

# Write a program that prints all the alphabets in a string and skips all other characters

string = "$john.snow#@Got.bad_ending/com"

for ch in string:

if (ch>='A' and ch<='Z') or (ch>='a' and ch<='z'):

print(ch, end='')

else:

pass

# Write a function that takes number of disks in tower of hanaoi problem and returns the minimum number of steps required

def hanoi(x):

if x == 1:

return 1

else:

return 2*hanoi(x-1) + 1

# Write a lambda function to convert centimeters to inches

cm_to_inch = lambda x: x/2.54

# Write a lambda function to find the union of two lists

union = lambda a, b: list(set(a)|set(b))

# Write a lambda function to find the intersection of two lists

intersection = lambda a, b: list(set(a)&set(b))

# Write a program that adds the square of two numbers and prints it

a = 32

b = 21

result = a**2 + b**2

print(result)

# Write a python function to concat the input strings and there's also a choice for seperator

def con_str(*args, sep = ' '):

return sep.join(args)

# Write a program to print all the even numbers in a range

r1, r2 = 1, 28

for _ in range(r1, r2+1):

if _%2 == 0:

print(_)

# write a python program to sort dictionary items

dict1 = {'car': [7, 6, 3],

'bike': [2, 10, 3],

'truck': [19, 4]}

print(f"The original dictionary is : {str(dict1)}")

res = dict()

for key in sorted(dict1):

res[key] = sorted(dict1[key])

print(f"The sorted dictionary : {str(res)}")

# write a program to display date and time

import datetime

now = datetime.datetime.now()

time= now.strftime("%Y-%m-%d %H:%M:%S")

print(f"Current date and time : {time}")

# write a program to return the absolute value

num = -10